<style>
    .message {
        text-align: center;
        color: green;
        font-size: 16px;
        font-weight: bold;    
    }
</style>
<p><div class="message"><?php echo $GLOBALS['traduction_message']; ?></div></p>

<script>
$(document).ready(function(){
    $('.message').delay(3000).fadeOut(2000);
});
</script>